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<details class="folding-tag" blue><summary> 点击查看使用工具及版本 </summary>
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              <table>    <tr>        <td align="center" width=150px>Windows</td>        <td align="left">windows11</td>    </tr>    <tr>        <td align="center">Ubuntu</td>        <td align="left">Ubuntu16.04的64位版本</td>      </tr>    <tr>        <td align="center">VMware® Workstation 16 Pro</td>        <td align="left">16.2.3 build-19376536</td>      </tr>    <tr>        <td align="center">SecureCRT</td>        <td align="left">Version 8.7.2 (x64 build 2214)   -   正式版-2020年5月14日</td>      </tr>    <tr>        <td align="center" width=150>Linux开发板</td>        <td align="left">华清远见 底板: FS4412_DEV_V5 核心板: FS4412 V2</td>      </tr>    <tr>        <td align="center" width=150>u-boot</td>        <td align="left">2013.01</td>      </tr></table>
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<details class="folding-tag" blue><summary> 点击查看相关文件下载 </summary>
              <div class='content'>
              <table>    <tr><td align="center">文件</td><td align="center">下载链接</td></tr>    <tr><td align="left">uboot_bin.rar</td><td align="left"><a href="https://wwz.lanzouy.com/iH1vO09jxavi" target="_blank">uboot原始镜像(不可以直接烧写)和LED灯闪烁测试程序 <i class="fa fa-external-link-alt"></i> </a></td></tr>    <tr><td align="left">WIn32_disk_imager.rar</td><td align="left"><a href="https://wwz.lanzouy.com/iX1wL09jx6zi" target="_blank">windows下向SD卡烧写uboot镜像的软件 <i class="fa fa-external-link-alt"></i> </a></td></tr>    <tr><td align="left">example_uboot.rar</td><td align="left"><a href="https://wwz.lanzouy.com/i6TTb09jx6tc" target="_blank">可以直接烧写到SD卡的uboot镜像文件 <i class="fa fa-external-link-alt"></i> </a></td></tr></table>
              </div>
            </details>



<h1 id="一、uboot的烧写"><a href="#一、uboot的烧写" class="headerlink" title="一、uboot的烧写"></a><font size=3>一、<code>uboot</code>的烧写</font></h1><h2 id="1-生成镜像"><a href="#1-生成镜像" class="headerlink" title="1. 生成镜像"></a><font size=3>1. 生成镜像</font></h2><p>我们这里先直接拿编译好的<code>uboot</code>镜像来进行封装，使其可以烧写到<code>SD</code>卡中。</p>
<ul>
<li>下载解压相应文件</li>
</ul>
<p>我在<code>windows</code>下将文件下载下来后存放到共享目录中并解压，此时我们可以得到如下两个文件：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814211150915.png" alt="image-20220814211150915" style="zoom:50%;" />

<p>下边<code>u-boot-fs4412.bin</code>就是未经封装的<code>bin</code>文件，<code>interface.bin</code>是一个<code>led</code>灯闪烁的测试文件。解压完毕后，我们将文件放入<code>Ubuntu</code>中，在终端执行以下命令：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">mkdir -p ~/3tftp/fs4412           # 创建一个存放相关文件的目录</span><br><span class="line">cd ~/3tftp/fs4412                 # 进入fs4412文件夹</span><br><span class="line">cp /mnt/hgfs/Sharedfiles/test/uboot/uboot_bin/* .   # 拷贝相关文件</span><br></pre></td></tr></table></figure>

<ul>
<li>制作一个<code>512</code> 字节的空镜像</li>
</ul>
<p>我们在终端执行以下命令，制作一个<code>512Bytes</code>的空镜像：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo dd if=/dev/zero of=zero.bin count=1</span><br></pre></td></tr></table></figure>

<p>执行后我们会得到如下提示：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">记录了1+0 的读入</span><br><span class="line">记录了1+0 的写出</span><br><span class="line">512字节已复制，0.000298393 s，1.7 MB/s</span><br></pre></td></tr></table></figure>

<p>然后在当前目录下会生成一个<code>512</code>字节的<code>zero.bin</code>文件。</p>
<ul>
<li>将<code>uboot</code>追加到<code>zero.bin</code>之后生成<code>win-u-boot-fs4412.bin</code></li>
</ul>
<p>我们在终端执行以下命令：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">cat zero.bin u-boot-fs4412.bin &gt; win-u-boot-fs4412.bin</span><br></pre></td></tr></table></figure>

<p>然后我们便会得到一个名为<code>win-u-boot-fs4412.bin</code>的<code>bin</code>文件，这个文件将会被烧写到<code>SD</code>卡中。</p>
<ul>
<li>制作一个<code>1M</code>的空镜像</li>
</ul>
<p>我们再制作一个<code>1M</code>字节的空镜像用于擦除<code>SD</code>卡中原有的数据：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo dd if=/dev/zero of=clear.bin count=2048</span><br></pre></td></tr></table></figure>

<p>然后我们在当前目录下会得到一个<code>1M</code>字节的名为<code>clear.bin</code>的<code>bin</code>文件。</p>
<h2 id="2-制作SD卡启动盘"><a href="#2-制作SD卡启动盘" class="headerlink" title="2. 制作SD卡启动盘"></a><font size=3>2. 制作<code>SD</code>卡启动盘</font></h2><p>其实这一步就是将我们上边生成的<code>win-u-boot-fs4412.bin</code>文件烧写到<code>SD</code>卡中去。</p>
<ul>
<li>下载<code>win32_disk_imager.rar</code>文件并解压</li>
</ul>
<p>解压后我们会得到一个程序烧写的软件，这个软件是免安装的，可以直接运行。</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814212448313.png" alt="image-20220814212448313" style="zoom:50%;" />

<p>软件打开后如下图所示：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814212636263.png" alt="image-20220814212636263" style="zoom:40%;" />

<ul>
<li>清除<code>SD</code>卡原有数据</li>
</ul>
<p>其实就是将<code>clear.bin</code>文件烧进<code>SD</code>卡：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213111036.png" alt="image-20220814213111036" style="zoom:40%;" />

<p>然后会有以下提醒，我们选择<code>Yes</code>即可。</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213135098.png" alt="image-20220814213135098" style="zoom:40%;" />

<p>烧写成功会有成功的提醒：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213208205.png" alt="image-20220814213208205" style="zoom:40%;" />

<p>因为<code>clear.bin</code> 为空镜像，所以写入后<code>SD</code>卡中的前<code>2048</code>个扇区中的数据被擦除。</p>
<ul>
<li>烧写<code>uboot</code>镜像文件</li>
</ul>
<p>首先选择<code>win-u-boot-fs4412.bin</code>文件，然后点击写入：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213342953.png" alt="image-20220814213342953" style="zoom:40%;" />

<p>后边弹窗也选择<code>Yes</code>，看到如下提醒，便是写入成功了：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213445809.png" alt="image-20220814213445809" style="zoom:40%;" />

<h2 id="3-启动uboot"><a href="#3-启动uboot" class="headerlink" title="3. 启动uboot"></a><font size=3>3. 启动<code>uboot</code></font></h2><p>烧写完成后，我们将<code>SD</code>卡插入开发板卡槽，然后将开发板的拨码开关卡槽调整到<code>TF/SD</code>卡启动的方式，在<code>SecureCRT</code>终端中若打印以下信息，且<code>LED2</code>被点亮，那么就说明我们已经烧写成功了：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-02-uboot-01-%E7%83%A7%E5%86%99%E4%B8%8E%E5%8A%A0%E8%BD%BD/img/image-20220814213811541.png" alt="image-20220814213811541" style="zoom: 25%;" />

<h1 id="二、eMMC加载uboot"><a href="#二、eMMC加载uboot" class="headerlink" title="二、eMMC加载uboot"></a><font size=3>二、<code>eMMC</code>加载<code>uboot</code></font></h1><p>对于<code>uboot</code>我们使用的是从<code>SD</code>卡启动，我们也可以将<code>uboot</code>安装到<code>eMMC</code> 中然后从<code>eMMC</code>启动<code>uboot</code>，这样就可以不使用<code>SD</code>卡了。</p>
<h2 id="1-文件准备"><a href="#1-文件准备" class="headerlink" title="1. 文件准备"></a><font size=3>1. 文件准备</font></h2><p>我们前边将<code>u-boot-fs4412.bin</code>已经存放到<code>ubuntu</code>的<code>/home/hk/3tftp/fs4412</code>目录下了，所以这里就暂时不需要其他文件了。</p>
<h2 id="2-镜像写入eMMC"><a href="#2-镜像写入eMMC" class="headerlink" title="2. 镜像写入eMMC"></a><font size=3>2. 镜像写入<code>eMMC</code></font></h2><ul>
<li>通过<code>tftp</code>下载<code>u-boot-fs4412.bin</code></li>
</ul>
<p>我们在<code>SecureCRT</code>中输入以下命令：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">tftp 0x41000000 /fs4412/u-boot-fs4412.bin</span><br></pre></td></tr></table></figure>

<p>下载成功后会有以下提示信息：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">dm9000 i/o: 0x5000000, id: 0x90000a46 </span><br><span class="line">DM9000: running in 16 bit mode</span><br><span class="line">MAC: 11:22:33:44:55:66</span><br><span class="line">operating at 100M full duplex mode</span><br><span class="line">Using dm9000 device</span><br><span class="line">TFTP from server 192.168.10.101; our IP address is 192.168.10.102</span><br><span class="line">Filename &#x27;/fs4412/u-boot-fs4412.bin&#x27;.</span><br><span class="line">Load address: 0x41000000</span><br><span class="line">Loading: T ####################################</span><br><span class="line">         92.8 KiB/s</span><br><span class="line">done</span><br><span class="line">Bytes transferred = 527104 (80b00 hex)</span><br></pre></td></tr></table></figure>

<ul>
<li>将<code>u-boot-fs4412.bin</code>安装到<code>eMMC</code>中指定的扇区</li>
</ul>
<p>首先打开<code>eMMC</code>设备：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">fs4412 # emmc open 0</span><br></pre></td></tr></table></figure>

<p>然后将数据写入到<code>eMMC</code>：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">fs4412 # mmc write 0 0x41000000 0x0 0x800</span><br><span class="line"><span class="meta prompt_"></span></span><br><span class="line"><span class="meta prompt_"># </span><span class="language-bash">写入成功会有以下提醒：</span></span><br><span class="line">MMC write: dev # 0, block # 0, count 2048. 2048 blocks write finish</span><br><span class="line">2048 blocks written: OK</span><br></pre></td></tr></table></figure>

<p>最后关闭<code>eMMC</code>设备：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">fs4412 # emmc close 0</span><br><span class="line"><span class="meta prompt_"># </span><span class="language-bash">关闭成功会有以下提醒：</span></span><br><span class="line">eMMC CLOSE Success.!!</span><br></pre></td></tr></table></figure>

<h2 id="3-调整开发板启动方式"><a href="#3-调整开发板启动方式" class="headerlink" title="3. 调整开发板启动方式"></a><font size=3>3. 调整开发板启动方式</font></h2><p>这一步就是看开发板上的丝印，看一下拨码开关是怎样的状态对应<code>eMMC</code>启动即可。</p>
<h2 id="4-重启开发板"><a href="#4-重启开发板" class="headerlink" title="4. 重启开发板"></a><font size=3>4. 重启开发板</font></h2><p>拨码开关拨到相应位置的时候，拔掉<code>SD</code>卡，然后重启开发板，观察是否可以成功启动即可。若有以下信息打印，则证明启动成功：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line">U-Boot 2013.01 (Apr 11 2020 - 04:15:49) for fs4412</span><br><span class="line"></span><br><span class="line">CPU:    Exynos4412@1000MHz</span><br><span class="line"></span><br><span class="line">Board: ORIGEN</span><br><span class="line">DRAM:  1 GiB</span><br><span class="line">WARNING: Caches not enabled</span><br><span class="line">PMIC: S5M8767(VER5.0)</span><br><span class="line">MMC:   MMC0:    7456 MB</span><br><span class="line">In:    serial</span><br><span class="line">Out:   serial</span><br><span class="line">Err:   serial</span><br><span class="line"></span><br><span class="line">MMC read: dev # 0, block # 48, count 16 ...16 blocks read: OK</span><br><span class="line">eMMC CLOSE Success.!!</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">Checking Boot Mode ... EMMC4.41</span><br><span class="line">Net:   dm9000</span><br><span class="line">Hit any key to stop autoboot:  3</span><br></pre></td></tr></table></figure>




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            window.setTimeout("siteTime()", 1000);
            var seconds = 1000;
            var minutes = seconds * 60;
            var hours = minutes * 60;
            var days = hours * 24;
            var years = days * 365;
            var today = new Date();
            var todayYear = today.getFullYear();
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            var todayHour = today.getHours();
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            /*==================================================
            Date.UTC() -- 返回date对象距世界标准时间(UTC)1970年1月1日午夜之间的毫秒数(时间戳)
            year        - 作为date对象的年份，为4位年份值
            month       - 0-11之间的整数，做为date对象的月份
            day         - 1-31之间的整数，做为date对象的天数
            hours       - 0(午夜24点)-23之间的整数，做为date对象的小时数
            minutes     - 0-59之间的整数，做为date对象的分钟数
            seconds     - 0-59之间的整数，做为date对象的秒数
            microseconds - 0-999之间的整数，做为date对象的毫秒数
            ==================================================*/
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            var diff = t2-t1;
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            var diffSeconds = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours-diffMinutes*minutes)/seconds);
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